---
title: "DuoKeyboard – Chrome extension stats, history and permissions"
description: "5,000 users, rated 4.20 by 50 people. Version 1.5.1, updated 2024-01-24. Requests 2 permissions."
url: "https://extensiontracker.com/extension/dekooljcgfaiokofbciaflklkfniimfa"
---

# DuoKeyboard

Live in the Chrome Web Store.

- Users: 5,000
- Rating: 4.20 from 50 ratings
- Last checked: 2026-11-10 00:11 UTC
- Users gained in 7 days: No change
- Users gained in 30 days: No change (+0.0%)
- Rank by users: #10,132 of 292,131 live extensions
- Rank in Workflow & Planning: #3,166 of 49,293

## The listing

What the Chrome Web Store shows, as of the last check.

Summary from the listing:

> Adds automatic keyboard switching on duolingo.com based on the user preferences.

- Extension ID: `dekooljcgfaiokofbciaflklkfniimfa`
- Developer: [Nullbrains](https://extensiontracker.com/developer/u7314d75416feb0eb08271b5510b53e17)
- Enhanced Safe Browsing: Trusted ([what this means](https://extensiontracker.com/enhanced-safe-browsing))
- Category: [Productivity › Workflow & Planning](https://extensiontracker.com/category/productivity/workflow)
- First published: 2016-10-09
- Last updated: 2024-01-24
- Version: `1.5.1`
- Size: 224 KiB
- Minimum Chrome: 88
- Languages (1): English
- Chrome Web Store: <https://chromewebstore.google.com/detail/duokeyboard/dekooljcgfaiokofbciaflklkfniimfa>
- View its code or download CRX: <https://crxpeek.com/extension/dekooljcgfaiokofbciaflklkfniimfa>
- Search Google for the ID: <https://www.google.com/search?q=%22dekooljcgfaiokofbciaflklkfniimfa%22&tbs=li:1>

## Users over time

One row per check, newest first, as shown on the Chrome Web Store.

| Checked | Users | Rating | Ratings |
| --- | ---: | ---: | ---: |
| 2026-11-10 | 5,000 | 4.20 | 50 |
| 2026-11-02 | 5,000 | 4.20 | 50 |
| 2026-10-27 | 5,000 | 4.20 | 50 |
| 2026-10-20 | 5,000 | 4.20 | 50 |
| 2026-10-13 | 5,000 | 4.20 | 50 |
| 2026-10-06 | 5,000 | 4.20 | 50 |
| 2026-09-30 | 5,000 | 4.20 | 50 |
| 2026-09-26 | 5,000 | 4.18 | 49 |

## What changed

Every change found on a check, newest first.

No changes found since tracking began on 2026-09-26.

## Developer history

Moves to another publisher account and new contact emails, newest first.

No move to another account and no new contact email since tracking began on 2026-09-26.

We know contact emails only by a keyed hash, so they're never shown. Recent changes: [Account and contact changes](https://extensiontracker.com/owners/).

## What it can access

From the extension's manifest, in plain language.

### Sites where it runs scripts

- `https://*.duolingo.com/*`: duolingo.com and its subdomains

### Browser features

- `storage`: Save settings and data in your browser
- `tabs`: Read the addresses and titles of your tabs

## More from this developer

Other extensions from the same publisher account.

| Extension | Users | Rating | Ratings | Category |
| --- | ---: | ---: | ---: | --- |
| [WebP / Avif image converter](https://extensiontracker.com/extension/pbcfbdlbkdfobidmdoondbgdfpjolhci) | 100,000 | 3.33 | 230 | Workflow & Planning |
| [Let's get color blind](https://extensiontracker.com/extension/bkdgdianpkfahpkmphgehigalpighjck) | 8,000 | 3.58 | 24 | Accessibility |

All 3 extensions by [Nullbrains](https://extensiontracker.com/developer/u7314d75416feb0eb08271b5510b53e17).

## About this data

Collected from the extension's public Chrome Web Store listing. It's checked every week, because it has 1,000 or more users, and again whenever a new version appears. Last checked 2026-11-10 00:11 UTC; next check around 2026-11-17.

How the data is collected: <https://extensiontracker.com/methodology>.

## Cite this page

Extension Tracker. “DuoKeyboard” (dekooljcgfaiokofbciaflklkfniimfa). Chrome Web Store data, last checked 2026-11-10. https://extensiontracker.com/extension/dekooljcgfaiokofbciaflklkfniimfa. Accessed 2026-11-13.

```bibtex
@misc{extensiontracker_dekooljcgfaiokofbciaflklkfniimfa,
  title   = {DuoKeyboard (dekooljcgfaiokofbciaflklkfniimfa)},
  author  = {{Extension Tracker}},
  year    = {2026},
  note    = {Chrome Web Store data, last checked 2026-11-10},
  url     = {https://extensiontracker.com/extension/dekooljcgfaiokofbciaflklkfniimfa},
  urldate = {2026-11-13}
}
```

---

From Extension Tracker, a public record of the Chrome Web Store: <https://extensiontracker.com/extension/dekooljcgfaiokofbciaflklkfniimfa>. It isn't affiliated with Google. The data is free to reuse under CC BY 4.0 (<https://creativecommons.org/licenses/by/4.0/>), crediting Extension Tracker. Every page except search comes as Markdown too: add `format=md` to the address, as in `https://extensiontracker.com/extension/{id}?format=md`.